The Preoperative Mortality Predictor (PMP) score assists in estimating the risk of mortality around the time of surgery based on a range of patient factors. Each contributing factor corresponds to specific patient health conditions or demographics, with responses scored on a predefined scale. By asking about the patient's medical status, functional capabilities, age, and other health considerations, the tool calculates a score indicating potential risk, where higher scores suggest a greater risk of mortality.

Here's how each factor is scored:

- Inpatient status: Yes = 6, No = 0
- Sepsis: Yes = 4, No = 0
- Poor functional status: Yes = 3, No = 0
- Disseminated cancer: Yes = 1, No = 0
- Age, years:
  - < 65 = 0
  - 65-69 = 0.5
  - 70-79 = 1
  - >= 80 = 2
- Cardiac comorbidity: Yes = 5, No = 0
- Pulmonary comorbidity: Yes = 3, No = 0
- Renal comorbidity: Yes = 1, No = 0
- Liver comorbidity: Yes = 1, No = 0
- Steroids for chronic condition: Yes = 1, No = 0
- Weight loss (>10% in the last 6 months): Yes = 1, No = 0
- Bleeding disorder: Yes = 1, No = 0
- Do-not-resuscitate status: Yes = 1, No = 0
- Obesity: Yes = 1, No = 0

The total score is computed by summing all the individual scores corresponding to the patient's conditions and choices. Once the total score is calculated, it is used to interpret the perioperative mortality risk as follows:

- A score of 5 or lower indicates a 0.1% risk of perioperative mortality.
- Scores between 6 and 10 suggest a 0.6% risk.
- Scores between 11 and 15 imply a 2.4% risk.
- Scores ranging from 16 to 20 reflect a 12.6% risk.
- Scores between 21 and 25 correspond to a 37.5% risk.
- Scores of 26 or more suggest a risk of 40.0%.

This interpretation assists healthcare providers and patients in understanding mortality risk associated with surgery, facilitating informed decision-making.

The Preoperative Mortality Predictor score (PMP score) is a risk stratification model designed to predict mortality risk in patients undergoing surgery. The clinical purpose of the PMP score is to aid in preoperative decision-making and patient counseling by providing an estimate of the patient's risk of death. The intended patient population includes individuals who are scheduled for surgery, particularly those with complex medical histories or high-risk conditions.

The PMP score incorporates a range of patient characteristics and comorbidities as key components. These include the patient's inpatient status, presence of sepsis, functional status, presence of disseminated cancer, age, and various comorbidities such as cardiac, pulmonary, renal, and liver conditions. The use of steroids for a chronic condition, significant weight loss in the past six months, presence of a bleeding disorder, do-not-resuscitate status, and obesity are also considered. Each of these factors contributes to the overall score, which is used to estimate the patient's risk of mortality.

The Preoperative Mortality Predictor (PMP) score is a clinical calculator used to estimate the risk of mortality in patients undergoing non-cardiac surgery. It is particularly useful for clinicians when planning surgical interventions, as it helps to identify high-risk patients and guide preoperative decision-making. The PMP score takes into account several factors including age, functional status, and the presence of comorbidities such as heart failure, liver disease, and cancer. It does not apply to patients undergoing cardiac surgery, as the risk factors and outcomes for these patients are different. The PMP score should be used with caution in patients with conditions not included in the score, as it may underestimate their risk.

Preoperative Mortality Predictor score (PMP score)

Predicting risk of death in general surgery patients on the basis of preoperative variables using American College of Surgeons National Surgical Quality Improvement Program data.